John j



UNITED STATES PATENT OFFICE.

JOHN J. SOHILLINGER, OF NEW YORK, N. Y.

BUILDING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 293,524, dated February 12, 1884,

i Application filed November 15, i583. (No model.)

To all whom t may conacrun Be it known that I, J OHNJ SQHILLINGER, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Building-Blocks, of which the following is a specification.

My invention relates especially to blocks for -the partitionwalls of buildings, and particularly hollow blocks, also known as hollow tiles.7 Heretofore the sides of these blocks have been made solid, and, due to the nature of the material composing the blocks, it is very difficult, if not impossible, to` drive a nail for hanging pictures or other purposes into the partitionwalls toa greater depth than the plaster..

To overcome this defect is the primary object of my invention which therefore consists in providing one or both sides of the blocks with nail-holes, such holes tapering in an inward direction, to more readily admit the nails and afford a superior hold thereto, as hereinafter more fully set forth.

In the accompanying drawings, Figure 1 shows a block in cross-section embodying my invention. Fig. 2 is aside View thereof. Fig. 3 shows a modification.

Similar letters indicate corresponding parts.

The letter A designates the body of the block, which in this example is hollow, and

` in the sides of which are nail-holes B, taper` ing in an inward direction'. These holes B are distributed over the entire area of the sides of the block in close proximity to each other, so that a nail driven into the partitionwall ofthe building will generally meet ahole, sufficient space being, however, left between the holes to give the block the proper strength. The largest and smallest diameters of the nailholes B are respectively greater and less than the thickness of a nail, such as is commonly used for hanging pictures, or fastening the baseboards or other carpenters trimmings, and consequently either of theholes readily admits the nail, while it has a tendency to bind the nail, thus affording a rm hold thereto. When the block is hollow, thehail-holes B pass entirely through the walls thereof, as shown in Fig. l, and hence the nail also is allowed to pass through either of such walls, it passing throughthe small part of the proper hole, andV K able, they may be continued ina straight line inward from the smallest Fig. 3.

'Vhat I claim as new, and desire to secure part, :as shown in by Letters Patent, is

1. A building-block having one or both sides provided with nail-holes, substantially as shown and described.

2. A building-block having one or both sides provided with Vnail-holes tapering in an inward direction, substantially as shown and described.`

3. A hollow building-block having one or in an inward direction and passing entirely through the walls of the block, substantially as shown and described.

In testimony whereof I havehereunto set my hand and seal in the presence of two subscribing witnesses.

JOHN J. SGI-IILLINGER. [1.. s] Witnesses:

W. HAUFF, Y E. F. KAsrENnUBER.

Aboth sides provided with nail-holes tapering 

